GB406336A - Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments - Google Patents

Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments

Info

Publication number
GB406336A
GB406336A GB2360632A GB2360632A GB406336A GB 406336 A GB406336 A GB 406336A GB 2360632 A GB2360632 A GB 2360632A GB 2360632 A GB2360632 A GB 2360632A GB 406336 A GB406336 A GB 406336A
Authority
GB
United Kingdom
Prior art keywords
compass
periscope
image
eyepiece
prism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2360632A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROBERT ELIAS LLOYD OWEN
Original Assignee
ROBERT ELIAS LLOYD OWEN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROBERT ELIAS LLOYD OWEN filed Critical ROBERT ELIAS LLOYD OWEN
Priority to GB2360632A priority Critical patent/GB406336A/en
Publication of GB406336A publication Critical patent/GB406336A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/10—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors reflecting into the field of view additional indications, e.g. from collimator
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

406,336. Binoculars &c. ; anglemeasuring instruments. OWEN, H. E. L., 73, Perham Road, West Kensington, and OWEN, R. E. L., 18, Wilton Crescent, Wimbledon, both in London. Aug. 23, 1932, No. 23606. [Classes 97 (i) and 97 (ii).] A binocular &c. telescope is provided with a magnetic compass and a periscope for projecting into the eyepiece a horizontal image of the horizontal portion of the compass rim that is opposite the upper reflector of the periscope when the compass is held horizontally for determining the magnetic bearing of a distant object. A clinometer may also be provided by which the elevation of the observed object may be read off in the eyepiece. As shown, a binocular telescope 1 is provided with a periscope tube 2 having an enlarged head 4 to which is attached a housing 5 containing the upper reflecting prism 10 of the periscope. The housing 5 has an extension 6 in which is rotatably mounted a tube 8 extending from the box 9 of a liquid magnetic compass. The compass card has a vertical rim 9<b> bearing graduations of which an image is projected by the periscope system into the eyepiece 7 so as to be seen as a horizontal image. The lower reflector of the periscope comprises a compound prism 11, 12, the prism 11 having a reflecting surface 11<a>, Fig. 2, inclined at 45‹ to the horizontal, and the prism 12 having a reflecting surface 12a lying in a vertical plane inclined at 45‹ to the exit surface of the prism. The compass card may be graduated on its flat surface to enable bearings to be read directly when the cover 9<d> is raised. To enable angles of inclination to be read, the housing 5 with the compass can be removed from the tube 2 and replaced by a clinometer comprising a weighted pendulum 18, Fig. 4, provided with transparent scale 18a adjacent a window 16 ; a fixed wire 19 forms a zero line. The lens 3 and prisms 11, 12 project an image of the clinometer scale into the eyepiece. Alternatively each of the two telescopes of a pair of binoculars may be provided with a fitting so that an image of the compass graduations is seen in one eyepiece and an image of the clinometer scale in the other.
GB2360632A 1932-08-23 1932-08-23 Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments Expired GB406336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2360632A GB406336A (en) 1932-08-23 1932-08-23 Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2360632A GB406336A (en) 1932-08-23 1932-08-23 Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments

Publications (1)

Publication Number Publication Date
GB406336A true GB406336A (en) 1934-02-23

Family

ID=10198368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2360632A Expired GB406336A (en) 1932-08-23 1932-08-23 Improvements in or relating to binoculars, monoculars, telescopes and like viewing instruments

Country Status (1)

Country Link
GB (1) GB406336A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317350C1 (en) * 1983-05-09 1984-10-18 Carl 8580 Bayreuth Steiner Device for reflecting additional information into binoculars
WO1984004177A1 (en) * 1983-04-08 1984-10-25 Carl Steiner System for introducing by reflection additional information into binoculars
WO1991012550A1 (en) * 1990-02-19 1991-08-22 Walter Zapp Monocular telescope
EP0540394A1 (en) * 1991-10-31 1993-05-05 Thomson-Csf Dual image binoculars

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004177A1 (en) * 1983-04-08 1984-10-25 Carl Steiner System for introducing by reflection additional information into binoculars
US4630900A (en) * 1983-04-08 1986-12-23 Carl Steiner System for introducing by reflection additional information into binoculars
DE3317350C1 (en) * 1983-05-09 1984-10-18 Carl 8580 Bayreuth Steiner Device for reflecting additional information into binoculars
WO1991012550A1 (en) * 1990-02-19 1991-08-22 Walter Zapp Monocular telescope
EP0540394A1 (en) * 1991-10-31 1993-05-05 Thomson-Csf Dual image binoculars
FR2683331A1 (en) * 1991-10-31 1993-05-07 Thomson Csf DOUBLE IMAGE.
US5416633A (en) * 1991-10-31 1995-05-16 Thomson-Csf Twin-image binoculars

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